下列几种砖型中，耐磨性最好的是（）。

（）shall be liable for loss of and damage to the Vessel and／or goods arising or resulting from inaccuracies in stating the description，quantity，weight，measurement or contents.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

工程公司中标承包一城市道路施工项目，该工程项目所需的主要建材有路基土方填料、砂石材料、水泥、沥青材料、沥青混合料和钢材等。所有材料均由项目部自己采购和组织运输。项目部材料采购部门拟按工程量清单一材料需用量计划一材料供应计划一材料采购计划一材料使用计划的顺序进行材料计划管理，对几种材料的主要工程指标及工程特性提出的要求：①对于碎石，提出了强度和耐磨性要求。②为区分砂的粗细度，提出了砂的细度模数和平均粒径。③对于水泥，提出了化学性质、物理性质要求。 关于级配碎石的施工技术要求，下列说法中不正确的是（　）。